Google Code-in

The PostgreSQL documentation has a set of existing tutorials, one of which is "SQL Language". Attempt to follow this tutorial, after installing PostgreSQL and creating a database, to use and learn SQL with PostgreSQL. Make notes of issues trying to follow the tutorial, areas where the tutorial lacks specific information to be able to accomplish the task, places where the tutorial doesn't provide information about how to tell if a given step was successful or not, and other items which could be improved.

Using these notes, make changes to the PostgreSQL tutorial in its source format to address the deficiencies and submit these changes as patches to the PostgreSQL source tree so that they can be included in PostgreSQL in the future. These changes must be able to be patched to the PostgreSQL source code and the resulting changes built using the PostgreSQL build tool-chain.